A needle for a mold main runner

Abstract

The utility model relates to a scattered glue needle technical field especially a kind of scattered glue needle for mould main runner, including scattered glue needle outer tube, scattered glue needle assembly is inserted in the inside of scattered glue needle outer tube, the bottom of scattered glue needle outer tube is provided with adjusting assembly, the top of scattered glue needle outer tube is opened and has knockout hole, the inner surface of knockout hole is bonded with sealing rubber sleeve.Automatic benefit effect lies in:the utility model can be according to the interval size between mould main runner and die cavity intersection, scattered glue needle body moves along adjusting rod and guide hole in scattered glue needle outer tube interior, the length size of adjusting convex top extends knockout hole, and then the length of adjusting convex top insertion mould main runner and die cavity intersection is adjusted, it is convenient to carry out flexible adjustment use to scattered glue needle body;It can accelerate the speed of heat inside mould to radiate outward, it is convenient to mould main runner and die cavity intersection and mould middle quick heat dissipation cooling.

Description

Technical Field

[0001] This utility model relates to the field of glue-dispersing needle technology, and in particular to a glue-dispersing needle for use in the main runner of a mold. Background Technology

[0002] Currently, the production of plastic products typically involves injecting molten plastic directly into the mold cavity through the main runner of the mold for filling and molding. After filling, the product is cooled and then demolded. The molten plastic is pressurized by the injection molding machine and injected through the main runner of the mold. The space at the junction of the main runner outlet and the mold cavity is relatively large, which slows down the diffusion of the molten plastic into the mold cavity. Furthermore, the thickness of the plastic at the junction of the main runner and the mold cavity is often thicker than in other areas, requiring a longer cooling time.

[0003] Currently, mold cooling systems are typically located around the mold cavity. The area below the junction of the main runner and the mold cavity is where the heat accumulates the most in the entire mold. Conventional cooling systems cannot achieve efficient cooling. The cooling process is the most time-consuming step in the entire injection molding process. Reducing cooling time can save injection molding time and improve product production efficiency. Therefore, a heat dissipation agent for the main runner of a mold is provided to dissipate heat and cool the junction of the main runner and the mold cavity.

[0004] For example, the prior art Chinese patent announcement number "CN219583438U" provides a glue-dispersing needle and a mold for the main runner of a mold, including a glue-dispersing needle body, which is cylindrical in shape. A first boss is provided at the center of the upper end of the glue-dispersing needle body. The first boss is frustum-shaped and its top is spherical. The first boss is integrally formed with the glue-dispersing needle body. A groove extending along the axial direction of the glue-dispersing needle body is provided at the lower end of the glue-dispersing needle body. A second boss extends radially outward from the lower end of the outer wall of the glue-dispersing needle body and surrounds the glue-dispersing needle body. The second boss is integrally formed with the glue-dispersing needle body.

[0005] This device can accelerate the filling of the mold cavity with colloid, shorten the mold cooling time, speed up the product molding cycle, and thus improve the production efficiency of the product.

[0006] Existing glue-dispensing pins used for the main runner of molds have a relatively fixed insertion position at the junction of the main runner and the mold cavity, and their installation on the mold is also relatively fixed. It is inconvenient to adjust the position according to different distances at the junction of the main runner and the mold cavity, which makes it difficult to adjust and use flexibly. At the same time, since the glue-dispensing pin is installed inside the mold, it is only cooled by the cooling water in the internal cavity. The heat conduction between the heat in the mold and the glue-dispensing pin is slow, which fails to quickly transfer the heat in the mold to the inside of the glue-dispensing pin for rapid heat dissipation and cooling. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies where the position of the dispersing needle inserted into the junction of the main runner and the mold cavity is relatively fixed, and its installation on the mold is also relatively fixed, making it inconvenient to adjust the position according to different distances at the junction of the main runner and the mold cavity, and making it difficult to adjust and use flexibly. Therefore, this invention proposes a dispersing needle for the main runner of a mold.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] Design a glue-dispersing needle for the main runner of a mold, comprising a glue-dispersing needle outer cylinder, a glue-dispersing needle assembly inserted inside the outer cylinder, an adjusting component at the bottom end of the outer cylinder, and an ejection hole at the top end of the outer cylinder, the inner surface of which is bonded with a sealing rubber sleeve; the glue-dispersing needle assembly comprises a glue-dispersing needle body, a protruding top fixed at the top end of the glue-dispersing needle body, a first thermally conductive silicone sleeve bonded to the outer surface of the glue-dispersing needle body, a connecting plate fixed at the bottom end of the glue-dispersing needle body, a guide hole on the surface of the connecting plate, and a connecting hole on the outer side of the guide hole; the adjusting component comprises a mounting plate and an adjusting rod, the mounting plate being fixed at the bottom end of the outer cylinder, with a through hole in its center through which the glue-dispersing needle body slides, the mounting plate having a mounting hole on its surface, the adjusting rod being fixed at the bottom end of the mounting plate and sliding through the guide hole, a tightening bolt passing through the connecting hole, and a length scale strip fixed to the surface of the adjusting rod.

[0010] Furthermore, a second thermally conductive silicone sleeve is bonded to the outer surface of the outer cylinder of the dispersing needle, and heat dissipation holes are opened on the side wall of the second thermally conductive silicone sleeve. A sealing sleeve is bonded to the top edge of the outer cylinder of the dispersing needle.

[0011] Furthermore, the outer cylinder of the dispersing needle has a cylindrical structure, and the convex top tightly passes through the middle of the sealing rubber sleeve on the inner surface of the ejection hole. The convex top has a conical column structure with an arc-shaped protrusion at its top.

[0012] Furthermore, the dispersing needle body has a cylindrical hollow structure, and the first thermally conductive silicone sleeve is in contact with the inner surface of the outer cylinder of the dispersing needle.

[0013] Furthermore, the connecting plate has a circular plate structure, the guide holes are evenly distributed on the surface edge of the connecting plate, and the connecting holes have a threaded hole structure and communicate with the guide holes.

[0014] Furthermore, the mounting plate is a circular plate structure and is located at the top of the connecting plate, and they are arranged parallel to each other.

[0015] Furthermore, the adjusting rod is a cylindrical structure and is evenly distributed at the bottom end of the mounting plate. The tightening bolt is threadedly connected to the connecting hole, and its inner end presses against the surface of the adjusting rod.

[0016] Furthermore, the heat dissipation holes are evenly distributed on the side wall of the second thermally conductive silicone sleeve, forming a long strip-shaped groove structure. The sealing sleeve is made of high-temperature resistant rubber, and its top end is flush with the top end of the outer cylinder of the adhesive dispersing needle.

[0017] The present invention proposes a glue-dispersing needle for the main runner of a mold, which has the following advantages:

[0018] 1. This utility model features a detachable outer sleeve for the glue-dispersing needle body. The glue-dispersing needle body is installed in the mold via the outer sleeve and mounting plate. The bottom end of the glue-dispersing needle body and the bottom end of the outer sleeve are connected in an adjustable manner via an adjustment component. Therefore, the glue-dispersing needle body can move along the adjustment rod and guide hole inside the outer sleeve according to the distance between the main runner and the mold cavity, adjusting the length of the protrusion extending out of the ejection hole, and thus adjusting the length of the protrusion inserted into the intersection of the main runner and the mold cavity, facilitating flexible adjustment and use of the glue-dispersing needle body.

[0019] 2. This utility model provides a first thermally conductive silicone sleeve between the dispensing needle body and the inner wall of the dispensing needle outer cylinder, and a second thermally conductive silicone sleeve is bonded to the outer surface of the dispensing needle outer cylinder for contact with the mold and heat conduction. Heat dissipation holes are evenly provided on the inner wall of the second thermally conductive silicone sleeve. Therefore, it can accelerate the heat dissipation speed from the inside of the mold to the outside, and facilitate rapid heat dissipation and cooling at the junction of the main runner and the mold cavity and in the middle of the mold. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This utility model Figure 1 A schematic diagram of the adjustment components;

[0022] Figure 3 This utility model Figure 1 A schematic diagram of the mounting plate section;

[0023] Figure 4 This utility model Figure 1 A schematic diagram of the sealing sleeve and the second thermally conductive silicone sleeve;

[0024] Figure 5 This utility model Figure 1 A schematic diagram of the ejector hole and sealing rubber sleeve;

[0025] Figure 6 This utility model Figure 1 A schematic diagram of the dispersing needle body;

[0026] Figure 7 This utility model Figure 6 A schematic diagram of the connecting plate section.

[0027] In the diagram: 1. Mounting plate; 2. Outer cylinder of the adhesive dispersing needle; 3. Second thermally conductive silicone sleeve; 4. Sealing sleeve; 5. Protruding top; 6. Adhesive dispersing needle body; 7. Adjusting rod; 8. Connecting plate; 9. Heat dissipation hole; 10. Mounting hole; 11. Length scale bar; 12. Tightening bolt; 13. Through hole; 14. Ejection hole; 15. Sealing rubber sleeve; 16. First thermally conductive silicone sleeve; 17. Connecting hole; 18. Guide hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The figure shows a glue-dispersing needle for the main runner of a mold, including a glue-dispersing needle outer cylinder 2, a glue-dispersing needle assembly inserted inside the glue-dispersing needle outer cylinder 2, an adjustment component at the bottom end of the glue-dispersing needle outer cylinder 2, and an ejection hole 14 at the top end of the glue-dispersing needle outer cylinder 2. A sealing rubber sleeve 15 is bonded to the inner surface of the ejection hole 14.

[0030] The adhesive dispersing needle assembly includes an adhesive dispersing needle body 6, which is a cylindrical hollow structure. A protruding top 5 is fixed at the top of the adhesive dispersing needle body 6. A first thermally conductive silicone sleeve 16 is bonded to the outer surface of the adhesive dispersing needle body 6, and the first thermally conductive silicone sleeve 16 is in contact with the inner surface of the outer cylinder 2 of the adhesive dispersing needle. A connecting plate 8 is fixed at the bottom of the adhesive dispersing needle body 6. A guide hole 18 is opened on the surface of the connecting plate 8, and a connecting hole 17 is opened on the outer side of the guide hole 18.

[0031] The adjustment assembly includes a mounting plate 1 and an adjustment rod 7. The mounting plate 1 is a circular plate structure and is located at the top of the connecting plate 8, and is arranged parallel to each other. The adjustment rod 7 is a cylindrical structure and is evenly distributed at the bottom end of the mounting plate 1. The mounting plate 1 is fixed to the bottom end of the outer cylinder 2 of the dispersing needle, and has a through hole 13 in the middle. The dispersing needle body 6 slides through the through hole 13. The surface of the mounting plate 1 has a mounting hole 10. The adjustment rod 7 is fixed to the bottom end of the mounting plate 1 and slides through the guide hole 18. A tightening bolt 12 passes through the inside of the connecting hole 17. The tightening bolt 12 is threadedly connected to the connecting hole 17, and its inner end presses against the surface of the adjustment rod 7. The surface of the adjustment rod 7 is fixed with a length scale strip 11, which can accurately adjust the position of the dispersing needle body 6 and the convex top 5.

[0032] The outer sleeve of the dispersing needle body 6 is detachably connected to the outer sleeve of the dispersing needle body 2. The dispersing needle body 6 is adjustablely installed in the mold through the outer sleeve of the dispersing needle body 2 and the mounting plate 1. The bottom end of the dispersing needle body 6 and the bottom end of the dispersing needle body 2 are adjustablely connected through the adjustment component. Therefore, the dispersing needle body 6 can move along the adjustment rod 7 and the guide hole 18 inside the dispersing needle body 2 according to the distance between the main runner of the mold and the cavity, and adjust the length of the protrusion 5 extending out of the ejection hole 14. In turn, the length of the protrusion 5 inserted into the intersection of the main runner of the mold and the cavity can be adjusted, which facilitates the flexible adjustment and use of the dispersing needle body 6.

[0033] The outer cylinder 2 of the dispersing needle has a cylindrical structure. The convex top 5 passes tightly through the middle of the sealing rubber sleeve 15 on the inner surface of the ejection hole 14. The convex top 5 has a conical column structure with an arc-shaped protrusion at its top.

[0034] The connecting plate 8 is a circular plate structure, the guide holes 18 are evenly distributed on the surface edge of the connecting plate 8, and the connecting hole 17 is a threaded hole structure and communicates with the guide holes 18. Example

[0035] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The figure shows a glue-dispersing needle for a mold main runner, comprising a glue-dispersing needle outer cylinder 2, a glue-dispersing needle assembly inserted inside the outer cylinder 2, an adjusting component at the bottom end of the outer cylinder 2, an ejection hole 14 at the top end of the outer cylinder 2, and a sealing rubber sleeve 15 bonded to the inner surface of the ejection hole 14; the glue-dispersing needle assembly includes a glue-dispersing needle body 6, a protruding top 5 fixed at the top end of the glue-dispersing needle body 6, a first thermally conductive silicone sleeve 16 bonded to the outer surface of the glue-dispersing needle body 6, and a connecting plate 8 fixed at the bottom end of the glue-dispersing needle body 6. The surface of plate 8 has a guide hole 18, and the outer side of the guide hole 18 has a connecting hole 17; the adjustment assembly includes a mounting plate 1 and an adjustment rod 7. The mounting plate 1 is fixed to the bottom end of the outer cylinder 2 of the dispersing needle, and a through hole 13 is opened in the middle of it. The dispersing needle body 6 slides through the through hole 13. The surface of the mounting plate 1 has a mounting hole 10. The adjustment rod 7 is fixed to the bottom end of the mounting plate 1 and slides through the guide hole 18. A tightening bolt 12 passes through the inside of the connecting hole 17. A length scale strip 11 is fixed on the surface of the adjustment rod 7.

[0036] The outer sleeve of the dispersing needle body 6 is detachably connected to the outer sleeve of the dispersing needle body 2. The dispersing needle body 6 is adjustablely installed in the mold through the outer sleeve of the dispersing needle body 2 and the mounting plate 1. The bottom end of the dispersing needle body 6 and the bottom end of the dispersing needle body 2 are adjustablely connected through the adjustment component. Therefore, the dispersing needle body 6 can move along the adjustment rod 7 and the guide hole 18 inside the dispersing needle body 2 according to the distance between the main runner of the mold and the cavity, and adjust the length of the protrusion 5 extending out of the ejection hole 14. In turn, the length of the protrusion 5 inserted into the intersection of the main runner of the mold and the cavity can be adjusted, which facilitates the flexible adjustment and use of the dispersing needle body 6.

[0037] The outer surface of the outer cylinder 2 of the dispersing needle is bonded with a second thermally conductive silicone sleeve 3, and the side wall of the second thermally conductive silicone sleeve 3 is provided with heat dissipation holes 9. The top edge of the outer cylinder 2 of the dispersing needle is bonded with a sealing sleeve 4.

[0038] A first thermally conductive silicone sleeve 16 is provided between the glue-dispersing needle body 6 and the inner wall of the glue-dispersing needle outer cylinder 2. A second thermally conductive silicone sleeve 3 is bonded to the outer surface of the glue-dispersing needle outer cylinder 2 for contact with the mold and heat conduction. Heat dissipation holes 9 are evenly provided on the inner wall of the second thermally conductive silicone sleeve 3. Therefore, the heat inside the mold can be dissipated to the outside at a faster speed, which facilitates rapid heat dissipation and cooling at the junction of the main runner and the mold cavity and in the middle of the mold.

[0039] The heat dissipation holes 9 are evenly distributed on the side wall of the second thermally conductive silicone sleeve 3 and are long strip-shaped groove structures. The sealing sleeve 4 is made of high-temperature resistant rubber material, and its top end is flush with the top end of the outer cylinder of the adhesive dispersing needle 2.

[0040] Working method: The outer sleeve 2 of the dispersing needle body 6 is detachably sleeved on the outside of the dispersing needle body 6. The dispersing needle body 6 is adjustablely installed in the mold through the outer sleeve 2 and the mounting plate 1. The bottom end of the dispersing needle body 6 and the bottom end of the dispersing needle outer sleeve 2 are adjustablely connected through the adjustment component. Therefore, according to the distance between the main runner of the mold and the cavity, the dispersing needle body 6 can move along the adjustment rod 7 and the guide hole 18 inside the dispersing needle outer sleeve 2 to adjust the length of the protrusion 5 extending out of the ejection hole 14, and thus adjust the length of the protrusion 5 inserted into the intersection of the main runner of the mold and the cavity, so as to facilitate the flexible adjustment and use of the dispersing needle body 6.

[0041] A first thermally conductive silicone sleeve 16 is provided between the glue-dispersing needle body 6 and the inner wall of the glue-dispersing needle outer cylinder 2. A second thermally conductive silicone sleeve 3 is bonded to the outer surface of the glue-dispersing needle outer cylinder 2 for contact with the mold and heat conduction. Heat dissipation holes 9 are evenly provided on the inner wall of the second thermally conductive silicone sleeve 3. Therefore, the heat inside the mold can be dissipated to the outside at a faster speed, which facilitates rapid heat dissipation and cooling at the junction of the main runner and the mold cavity and in the middle of the mold.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A glue-dispersing needle for the main runner of a mold, comprising a glue-dispersing needle outer cylinder (2), characterized in that: The glue-dispersing needle outer cylinder (2) is internally connected to a glue-dispersing needle assembly. An adjustment assembly is provided at the bottom end of the glue-dispersing needle outer cylinder (2). An ejection hole (14) is opened at the top end of the glue-dispersing needle outer cylinder (2). A sealing rubber sleeve (15) is bonded to the inner surface of the ejection hole (14). The adhesive dispersing needle assembly includes an adhesive dispersing needle body (6), a protruding top (5) fixed at the top of the adhesive dispersing needle body (6), a first thermally conductive silicone sleeve (16) bonded to the outer surface of the adhesive dispersing needle body (6), a connecting plate (8) fixed at the bottom of the adhesive dispersing needle body (6), a guide hole (18) opened on the surface of the connecting plate (8), and a connecting hole (17) opened on the outer side of the guide hole (18). The adjustment assembly includes a mounting plate (1) and an adjustment rod (7). The mounting plate (1) is fixed to the bottom end of the outer cylinder (2) of the dispersing needle, and a through hole (13) is opened in the middle. The dispersing needle body (6) slides through the through hole (13). The surface of the mounting plate (1) has a mounting hole (10). The adjustment rod (7) is fixed to the bottom end of the mounting plate (1) and slides through the guide hole (18). A tightening bolt (12) passes through the inside of the connecting hole (17). A length scale strip (11) is fixed on the surface of the adjustment rod (7).

2. The glue-dispersing needle for the main runner of a mold according to claim 1, characterized in that: The outer surface of the outer cylinder (2) of the dispersing needle is bonded with a second thermally conductive silicone sleeve (3), and the side wall of the second thermally conductive silicone sleeve (3) has heat dissipation holes (9). The top edge of the outer cylinder (2) of the dispersing needle is bonded with a sealing sleeve (4).

3. A glue-dispersing needle for the main runner of a mold according to claim 1, characterized in that: The outer cylinder (2) of the dispersing needle is a cylindrical structure. The convex top (5) passes tightly through the middle of the sealing rubber sleeve (15) on the inner surface of the ejection hole (14). The convex top (5) is a conical column structure with an arc-shaped protrusion at its top.

4. A glue-dispersing needle for the main runner of a mold according to claim 1, characterized in that: The gel-dispersing needle body (6) has a cylindrical hollow structure, and the first thermally conductive silicone sleeve (16) is in contact with the inner surface of the gel-dispersing needle outer cylinder (2).

5. A glue-dispersing needle for the main runner of a mold according to claim 1, characterized in that: The connecting plate (8) is a circular plate structure, the guide holes (18) are evenly distributed on the surface edge of the connecting plate (8), and the connecting hole (17) is a threaded hole structure and communicates with the guide hole (18).

6. A glue-dispersing needle for the main runner of a mold according to claim 1, characterized in that: The mounting plate (1) is a circular plate structure and is located at the top of the connecting plate (8), and they are arranged parallel to each other.

7. A glue-dispersing needle for the main runner of a mold according to claim 1, characterized in that: The adjusting rod (7) is a cylindrical structure and is evenly distributed at the bottom end of the mounting plate (1). The tightening bolt (12) is threadedly connected to the connecting hole (17), and its inner end is pressed against the surface of the adjusting rod (7).

8. A glue-dispersing needle for the main runner of a mold according to claim 2, characterized in that: The heat dissipation holes (9) are evenly distributed on the side wall of the second thermally conductive silicone sleeve (3) and are long strip groove structures. The sealing sleeve (4) is made of high temperature resistant rubber material, and its top end is flush with the top end of the outer cylinder (2) of the glue dispersing needle.

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